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Myocarditis following COVID-19 mRNA vaccination.

Kanak ParmarPoemlarp MekraksakitGaspar Del Rio-PertuzPooja SethiArunee MotesMegan HughesJason WischmeyerLuis CarbajalErwin Argueta Sosa
Published in: Proceedings (Baylor University. Medical Center) (2021)
Messenger RNA vaccines are the main COVID-19 vaccines authorized for use in the United States. Side effects are typically minor and transient. We report a case series of four subjects with an acute myocarditis-like illness following mRNA COVID-19 vaccination who were hospitalized at our hospital in Lubbock, Texas. Three patients were young men who presented with acute chest pain after the second dose of the mRNA-1273 vaccine. Another patient was a 53-year-old white woman who presented with acute left arm pain 3 days after the first dose of the mRNA-1273 vaccine. She was later found to have acute decompensated heart failure, and endomyocardial biopsy revealed eosinophilic injury-mediated myocarditis.
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